Bureau of Land Management's Decision Record and Environmental

Jersey Valley Geothermal Development Project
Environmental Assessment: NV063 -EAO8 -091
Monitoring Requirement
The unit operator shall monitor the fresh water spring located on private land at the mouth
of Jersey Canyon in the SE/4NW/4SW/4 of Section 34, T27N, R4OE, MDB&M unless access
to the spring for monitoring purposes is denied by the private landowners and the unit
operator provides to BLM documentation from the private landowners that access for
monitoring has been denied. The unit operator shall annually collect and analyze samples
from this springs for basic water chemistry, and monitor representative flow, stage or
equivalent from this spring on the following schedule, unless otherwise modified by the
BLM authorized officer:
• Once immediately prior to the commencement of drilling, and once immediately
following the completion of drilling, of each new or redrilled geothermal well in the
geothermal unit area;
• Each year until the commencement of construction of the utilization facility;
• Once each quarter from the commencement of construction of utilization facility
until the cessation of all geothermal fluid production and injection operations from
the geothermal unit area for the utilization facility; and
• Once each year from the cessation of all geothermal fluid production and injection
operations from the geothermal unit area for the utilization facility until all
geothermal wells within the geothermal unit area have been abandoned.
Collected data shall be reported to the BLM in written form by the unit operator annually
within 30 days of the end of each calendar year, together with an interpretation of the
monitoring data collected during the preceding calendar year.
Due to the potential of some unknown impacts of this geothermal project on perennial cold
springs, seeps or other surface waters, the BLM will require additional monitoring of such
features by the unit operator. If any such features exist within one mile of the production
or injection well field of the Jersey Valley project, the unit operator will monitor on a
quarterly basis all such features for a period of three years upon start-up of each well field
and power plant. The unit operator will work with the BLM to establish monitoring points
at each such feature; and establish a written protocol to measure surface flow for each
feature. It is understood that such flows are influenced by meteoric events such as spring
run-off; high intensity storm events, etc.
Measures would also be taken by the proposed Project to minimize the effects of construction
and unit operations on the quality of surface and ground waters. To minimize erosion and stream
channel sedimentation, storm water runoff from undisturbed areas around the constructed well
pads, power plant sites and switching station would be directed into ditches surrounding the
disturbed areas and back onto undisturbed ground consistent with best management practices for
storm water. Access roads would also be constructed and maintained consistent with the best
management practices for road construction applicable to the intended use (temporary or
permanent) of the road. To minimize erosion and stream channel sedimentation, grading or
clearing of the surface for construction of the transmission line would occur only when
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